"The Manmohan Singh government's defeat in the trial of strength is imminent and the stony silence being maintained by usually-blustering union ministers from the state points in that direction," he said.
Kumar returned here after attending a meeting of NDA chief ministers in Delhi where they mulled over the strategy to pull down the UPA government.
"Now that it is clear that the government will not survive, the 'bayan bahadurs' (leaders thriving on statements) RJD ministers from Bihar have suddenly stopped making unsavoury remarks aginst me and my government."
He charged the UPA ministers, particularly those from RJD, with not cooperating with the state government in execution of several development schemes and said the NDA will make it an election issue.
"We will go the electorate with facts and figures and seek their support to bring the NDA to power at the Centre if they want their problems to be solved," he said.
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Referring to the Indo-US nuclear deal, Kumar said the Centre should suspend and keep in abeyance all further action till it has proved its majority in the Lok Sabha.